Double Roman Concrete Tile
Double Roman Concrete Tile

Sidlaw House

In 2015, Wienerberger was involved in a project to re-roof Sidlaw House in Stamford Hill, the first of ten social housing re-roof projects to be completed before 2017 in the North London area. Now completed, the modernised roof made using Wienerberger's Terracotta Concrete Double Roman roof tiles, which is an impressive 90 metres in length, will cover over 1,200 meters squared. 

Wienerberger was involved in a project to re-roof Sidlaw House in Stamford Hill, the first of ten social housing re-roof projects to be completed before 2017 in the North London area. Now completed, the modernised roof, which is an impressive 90 metres in length, covers over 1,200 meters squared.


As part of the regeneration, Baily Garner LLP specified high quality and visually appealing concrete roof tiles from Sandtoft, which were in turn installed by contractors Breyer Group.


The Challenge

 The key objective of the project was to modernise the upper reaches of the property including the creation of a roof that increased the property’s heat retention without detracting from its original design. The work involved included substantial reconstruction of the roof including the removal of the original insulation and modernisation of the electrical works.


Furthermore, due to the project being undertaken by a Housing Association, cost management was a core consideration for the architect and builders Breyer without compromising on design. The result of this was the specification of Sandtoft’s Terracotta Concrete Double Roman roof tiles.

The Solution

In most instances it would be prudent for clay roof tiles to be specified for such a project however, since the project was on such a huge scale, with a broad range of financial demands, it was necessary to keep costs low where possible without compromising on design or efficiency.

Due to the redbrick nature of the Stamford Hill area, the project had to meet strict design criteria to ensure it sat comfortably within its surroundings. Due to the rich Victorian heritage of the area the Roman roof tiles synchronise the new roof with the local vernacular, ensuring that the new roof does not look out of place. Victorian roofs are not famed for their thermal efficiency, so by working in tandem with the tile’s manufacturer, Sandtoft, it was possible for the project to work on an aesthetic level whilst still bringing modern efficiencies derived from utilising modern building techniques. This was by no means an easy feat; issues, which the project has overcome, included ventilation difficulties, which can often affect a conflict between design possibilities and meeting British Standards. The result of modernising the ventilation, as part of the re-roofing project, prevented the new roof insulation from causing condensation, which could have led to structural issues.

In addition to the renewal of the roof – the design brief specified other complex redevelopment facets. The dormers, for example, which are often found in buildings of Sidlaw House’s pedigree, had to be fully replaced. When one considers these extrusions, which drastically alter the roof’s face, the difficulties of installing a roof that achieves modern standards and architectural synergy soon become apparent.  The team from Breyer Group was able to overcome these obstacles whilst marinating the feel of the properties roof.

Beyond the specification of the roof tiles, Breyer and Sandtoft, were in dialogue throughout the project. Because of the technical issues involved, it was vital for all parties to work closely together and the Sandtoft team attended progress meetings and was on call for site visits where needed to assist the construction team as to how they could install the new roof as efficiently as possible, which in turn reduced costs incurred from scaffolding rent and labour.

As London and the UK’s other major population hubs continue to grow exponentially and building projects continue to spur on the urban sprawl, redevelopment of buildings is only going to increase as an industry. With that in mind and the ever-shrinking time scale housing projects have for completion, it is vital that architects and contractors have access to expert help to achieve their key objectives.

The Sidlaw House project clearly demonstrates that when a considerable roof redevelopment presents a plethora of issues, both time and money can be saved due expert advice and added value, working alongside organisations, such as Sandtoft and Wienerberger, that have the expertise to approve work as it progresses and advise on building methods.

Building Surveyor Rob Szoboszlay,

From Baily Garner LLP commented:

“The Sidlaw House project presented us with some serious challenges – the first of which was to ensure that the roof tiles corresponded with the local area whilst still being able to redevelop around it. To resolve this, we chose concrete roman tiles which were durable, visually pleasing and cost effective.”

Project Information

  • Project: Sidlaw House
  • Location: Stamford Hill, London
  • Client: Bailey Garner LLP
  • Contractor: Breyer Group 
  • Product: Sandtoft’s Terracotta Concrete Double Roman roof tiles

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